I have Presta type valves. I bought a couple of Schader adapters, so that I can use my current air chuck, pressure gage and so forth. I would like to know if they need to stay "screwed shut" or if when I open them to check the pressure and to put air in the tire, can I just leave them open so that I don't have to continuously remove the adapters from the valves and put them back on.
Thanks for any help on this matter. Best -